Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment | $ 67,656 | $ 67,605 |
| Less: accumulated depreciation and amortization | (41,696) | (39,933) |
| Total property and equipment, net | 25,960 | 27,672 |
| Leasehold Improvements | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment | 26,262 | 26,244 |
| Manufacturing Equipment | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment | 19,485 | 19,485 |
| Laboratory Equipment | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment | 19,014 | 19,014 |
| Computer Equipment and Software | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment | 1,893 | 1,893 |
| Furniture and Fixtures | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment | 902 | 902 |
| Construction in Progress | ||
| Property Plant And Equipment [Line Items] | ||
| Total property and equipment | $ 100 | $ 67 |